Thomas beiggs and edwabd webb



(No Model.)

I. BRIG-GS 82: E. WEBB.

YARN TWISTING MACHINE.

No. 341,792. Patented May 1]., 1886.

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THOMAS BRIGGS AN D EDWVARD WEBB, OF SALFORD, COUNTY OF LANCAS- TEB, ENGLAND.

EEPECIFICATION forming part of Letters Patent No. 341,792, dated May 11, 1886.

Application filed May 6, 1885. Serial'No. 164,516. (No model.) Patented in England January 31, 1884, No. 2,426. I

from the following description thereof, reference being made to the accompanying drawings, in which Figure 1 is a front elevation of one end section of our machine, parts of the frame being broken away. Fig. 2 is a vertical transverse section of the same on the line A A, Fig. l; and Fig. 3 is a back elevation of the same, parts of the frame being broken away.

Instead of the creel-pins being arranged at the top of the frame for receiving the bobbin of yarn to be twisted, as in the ordinary method of doubling, we arrange the spindles in pairs, mounted upon rails secured to the front of the frame a a. One of the spindles is termed the letting-off spindle. The other is an ordinary doubling-spindle, c a, provided with a flier, d d. The bobbins of yarn e 6, previously wound upon a doubling winding-frame, are placed upon the letting-off spindles, and the threads from each of these bobbins is carried upward through the ring g and over the pulley y, then round the draw-roller f f, then back round the pulley g, and over the draw-rollerf again, thence passing down the flier d to the bobbin e upon the taking-up spindle a. By this means the threads receive twist at both ends.

The bobbins e 6* are carried upon a traversing rail, 6, which is lifted and lowered by vertically-sliding rods 6 supported and actuated by chains 6 and pulleys e on a shaft, 6, to which an alternately-reversing movement is given by means of a mangle-wheel, e, driven by a pinion, a on a constantly -revolving shaft, e. (See Figs. 1 and 2.) This shaft 6 fast and loose pulleys t i, and driven by a band, jj, from a pulley, is it, upon a horizontal shaft, ZZ, passing from end to end of the front part of the frame. On each of these vertical shafts h h, and near the lower part thereof, is keyed a flanged pulley, mm, which serves to drive each pair of spindles by means of a band, a a, passing round both the small flanged pulleys, 0 o p p, on the spindles, and driving both in the same direction. On the upper part of each of these vertical shafts h h is keyed a pinion, g g, gearing into an intermediate wheel, r r,'which drives a changepinion, s s, keyed or fastened by means of a set-screw to another small upright shaft, t t, placed a short distance in front of the firstnamed vertical shaft hh. From this small upright shaft the draw-rollerff (placed between the two spindles b and c, forming the pair) is driven by means of bevel-gearing a a and a horizontal shaft, 0 12, extending to the front of the frame and carrying the drawroller.

The stopping of each pair of spindles is effected by removing the band driving the up right shaft from the fast pulleyt' t to the loose pulley 73 i by means of a strap-fork, w w, worked by a small handle, 00 at, in front of the machine. The said handle actuates the toothed sector 3 1 which is on the same shaft or axis, x, with the handle a, and raises or lowers the rack z z and weight as or, counterbalancing the weight of the said strap, fork, rack, and sector.

By this arrangement it will be seen that each pair of spindles, with its separate drawroller, forms a distinct machine, or section of a machine, complete in itself, although the frame may contain any number of pairs without any increase of space or pitch beyond that of the ordinary twisting-frames. The advantages of this construction will also be apparent to any one conversant with doubling and twisting heavy fibers, as it admits of a great variety of cords being produced simultaneously, and avoids all delay and expense in changing or running off a frame. Each spindle can be supp ied with fresh bobbins and doffed or pierced or changed separately while others are running, thus enabling a much larger turnoff to be obtained.

The principal advantages obtained by this improved construction of twisting-frame are, first, that both letting -off and windingon spindles being at the front of the machine, both space and labor are economized; second, that each separate section of the machine is complete in itself and can be started and stopped independently of all other sections; third, that the twist is put in at both ends of the yarn at once, and equal length and strain upon each strand is insured; fourth, that the system allows ef the spindles being driven at a much higherspeed than otherwise, and as they are driven from vertical pulleys with comparatively wide straps there is no liability to slip or miss twist, resulting in the production of a superior cord and very little waste.

We do not wish to claim in this case the arrangement of both the letting-off and doubling spindles at the front of the machine, as that feature is set forth in a separate application for patent'filed by us May 6, 1885, Serial No. 164,517.

We claim as our invention- 1. The combination of the spindles b and 0, adapted to receive letting-off and doubling bobbins, and having pulleys o and p, with shaft h, having pulley m, and strap a, passing round these pulleys, and with driving-pulley k, belt j, belt-shifter for the latter, and fast and loose pulleys i i on the shafth, all substantially as specified.

2. The combination of the letting-off spindle b, the doubling-spindle 0, flier d, and draw-roller f with the drivingshaft h,stopping and starting devices for the latter, and mechanism, substantially as set forth, whereby the two spindles and draw-roller are all driven from the shaft h, all substantially as set forth.

3. The combination of the letting-off spindle and doubling-spindle with the shaft h, and devices for transmitting motion to the spindles from the shaft h, fast and loose pulleys on the shaft, driving-pulley 7c, beltj, rack z, carrying a fork, w, a sector, y, shaft 00, and operatinghandle 00 for the sector, all substantially as specified.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

THOS. BRIGGS. EDlVARD \VEBB.

Witnesses:

J NO. HUeHEs, J. ERNEST Hnenss. 

